Actually what is occurring may not be a full "crash". It goes to about 1/2 progress on the install then prompts with the "This may destabilize" message I continue and it stalls out for about 2 or 3 seconds and then goes black. It appears to me to be going almost as if it had been restarted, but not all the way, If I remember right it skipped the memory test and goes through the rest of the start up process. After it comes back it runs slowly until I restart again.